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Integrated laser with perot-fabry cavity

Inactive Publication Date: 2003-09-25
OCLARO NORTH AMERICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007] In one advantageous embodiment the reflector is a Bragg grating allowing multimode operation.

Problems solved by technology

However, because the laser is not temperature-controlled, operation is no longer monomode and it is important for the semi-reflecting exit mirror to allow multimode operation.

Method used

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  • Integrated laser with perot-fabry cavity
  • Integrated laser with perot-fabry cavity

Examples

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Embodiment Construction

[0011] A monolithic component 1 in accordance with the invention as shown in FIG. 1 comprises two sections 21, 22, of which a first section 21 is a Fabry-Perot cavity laser and the second section 22 is a subcomponent of the component 1. The semiconductor laser first section 21 is made up of a stack of layers 2, 3, 4, 5, 6 on a substrate and including an active layer 4 of GaInAsP, for example, and electrical and optical confinement layers 3, 5. The stack of layers is terminated at the top and at the bottom by respective surface electric contact layers 6 and 2 that are used to bias the laser section 21. The laser layer 4 is bordered above and below by the confinement layers 5 and 3, respectively.

[0012] A laser cavity 7 is formed in a manner known in the art by cutting the layers, including the active layer 4, thereby producing mirror faces 8 and 9 that are treated to have the necessary coefficients of reflection, so that the active layer 4 is in a Fabry-Perot cavity 7. The laser secti...

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Abstract

A monolithic integrated component (10) comprises a plurality of sections (21, 22) including a section (21) constituting a laser having a cavity delimited by a partially reflecting reflector and at least one other section (22) adjacent said laser section (21). The partially reflecting reflector (11) is disposed between the laser section (21) and one of the adjacent sections (22) and is a Bragg reflector grating (11) that allows multimode operation of the laser (21).

Description

DESCRIPTION[0001] 1. Technical Field[0002] The field of the invention is that of monolithic integrated components having a plurality of sections including a section constituting a Fabry-Perot cavity laser and at least one other section adjacent said laser section. It relates to the production of a mirror between the laser and an adjacent section.[0003] 2. Prior Art[0004] In a device including a laser and a modulator, the light emitted by the laser is coupled into the modulator by means of an optical fiber, for example. The temperatures of the laser and the modulator are usually controlled to guarantee monomode operation of the laser. For long-haul transmission it is important for the emitted wavelength to remain constant. To reinforce monomode operation a semi-reflecting face constituting an exit face of a Fabry-Perot cavity of the laser is treated so that it is reflective at the operating wavelength of the laser.BRIEF DESCRIPTIONS OF THE INVENTION[0005] The present invention relate...

Claims

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Application Information

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IPC IPC(8): H01S5/026H01S5/125
CPCH01S5/125H01S5/0265
Inventor BRILLOUET, FRANCOISBURIE, JEAN-RENE
Owner OCLARO NORTH AMERICA
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